Welding of Advanced High Strength Steels for Automotive Applications

By Prof. Murugaiyan Amirthalingam | IIT Madras

Learners enrolled: 667

The use of advanced high strength steels (AHSS) is increasingly preferred in automotive applications due to improved crash energy management and enhanced strength-ductility combinations, resulting in greener and safer vehicles. The weldability of AHSS is generally poorer than conventional steels due to the high alloying contents required to obtain multi-phase microstructure. This course is aimed to discuss the (i) role of alloying elements in stabilizing multi-phase microstructures of AHSS, (ii) effect of weld thermal cycles on the evolution of microstructures and (iii) weldability of AHSS.

INTENDED AUDIENCE : Final year bachelors and masters students in Metallurgy, Mechanical, Automobile and Production Engineering. Industrial personnel working in automotive and steel making industries.

PREREQUISITES : Final year B.E/B.Tech students or Graduates of Metallurgical/Mechanical/Automobile/Production Engineering,Basic knowledge of steel physical metallurgy and welding processes.

INDUSTRY SUPPORT : All automotive manufacturers and their OEMs and Steel plants.

Summary

Course Status :	Ongoing
Course Type :	Elective
Duration :	4 weeks
Start Date :	26 Jul 2021
End Date :	20 Aug 2021
Exam Date :	26 Sep 2021 IST
Enrollment Ends :	09 Aug 2021
Category :	Metallurgy and Material science & Mining Engineering Materials Joining
Credit Points :	1
Level :	Postgraduate

Course layout

Week 1: Introduction to physical metallurgy of advanced high strength steels

Week 2: Introduction to welding processes in automotive industries (Advanced Gas Metal Arc, Resistance Spot and Laser Welding Processes).

Week 3: Welding metallurgy of advanced high strength steels – Effect of weld thermal cycles on the stability of phases,solidification behaviour, segregation and hot cracking susceptibility.

Week 4: Mechanical properties of advanced high strength steel weldments – Tensile shear testing, HAZ softening characteristics,role of modified weld thermal cycles (post pulsing and post weld heat treatments) to improve the mechanical properties

Books and references

Nil

Instructor bio

Prof. Murugaiyan Amirthalingam

IIT Madras

Instructor is currently working as an Assistant Professor in IIT-Madras. His research and teaching interests include welding metallurgy, welding processes development, steel product development and additive manufacturing.

Course certificate

The course is free to enroll and learn from. But if you want a certificate, you have to register and write the proctored exam conducted by us in person at any of the designated exam centres.
The exam is optional for a fee of Rs 1000/- (Rupees one thousand only).
Date and Time of Exams: 26 September 2021 Morning session 9am to 12 noon; Afternoon Session 2pm to 5pm.
Registration url: Announcements will be made when the registration form is open for registrations.
The online registration form has to be filled and the certification exam fee needs to be paid. More details will be made available when the exam registration form is published. If there are any changes, it will be mentioned then.
Please check the form for more details on the cities where the exams will be held, the conditions you agree to when you fill the form etc.

CRITERIA TO GET A CERTIFICATE

Average assignment score = 25% of average of best 3 assignments out of the total 4 assignments given in the course.
Exam score = 75% of the proctored certification exam score out of 100

Final score = Average assignment score + Exam score

YOU WILL BE ELIGIBLE FOR A CERTIFICATE ONLY IF AVERAGE ASSIGNMENT SCORE >=10/25 AND EXAM SCORE >= 30/75. If one of the 2 criteria is not met, you will not get the certificate even if the Final score >= 40/100.

Certificate will have your name, photograph and the score in the final exam with the breakup.It will have the logos of NPTEL and IIT Madras .It will be e-verifiable at nptel.ac.in/noc.

Only the e-certificate will be made available. Hard copies will not be dispatched.

Once again, thanks for your interest in our online courses and certification. Happy learning.

- NPTEL team

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